义齿树脂基托表面有机-无机杂化膜的制备与研究

Preparation and Research of Organic-inorganic Hybrid Coating on the Surface of Denture Base Resins

本研究设计合成应用于义齿树脂基托表面的有机-无机杂化膜。由缩水甘油醚基丙基三甲氧基硅烷(KH560)和正硅酸乙酯(TEOS)共水解缩合制得杂化硅溶胶;由甲基丙烯酸缩水甘油酯(GMA)、丙烯酸(AA)和甲基丙烯酸甲酯(MMA)三种单体共聚制得聚合物。两者利用KH560和GMA中的环氧基团进行交联,形成具有互穿网络结构的杂化膜。对膜层的硬度、附着性及抗破裂性等进行表征,并对覆膜后的基托树脂的光泽度、吸水性及溶解性进行测试。实验结果表明,杂化膜不仅具有良好的力学性能,而且提高了基托树脂的光泽度,降低了基托树脂的吸水性和溶解性,最终会提高基托综合性能。

An organic-inorganic hybrid coating was constructed on the surface of the denture base res- ins . The hybrid silica sol was prepared by co-hydrolysis and co-condensation of y-glycidyloxypropyl trimethoxysilane （KH560） and tetraethyl orthosilicate （TEOS）. The copolymer was prepared by co- polymerization of glycidyl methacrylate （GMA）, acrylic acid （AA） and methyl methacrylic acid （MMA）. The hybrid coating with inter penetrating network structure could be formed through the formation of cross-linking of the epoxy groups on the polymer chain and silica sol. The values of hard- ness, adhesion and resistance to rupture of the coating were tested. The values of water sorption, wa- ter solubility and glossiness of the denture base resins covered with coating were also measured. The experiments results revealed that the hybrid coating possesses good mechanical properties. Besides, the coating could increase the glossiness and decrease the water sorption, water soluhility of the den- ture base resins, ultimately improve the comprehensive properties of the denture base resins.